Carbureter.



G. s. PIERSON.

CARBUBETBR. APPLICATION figznocr. 1, 1901.

Patented Sept. 15, 1908.

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Specification of Letters ?at ent.

Application fi1ed .0ctober 7, 1901. Serial "so. 396,223,

To al whom it may concern:

Be it known that I, Gnonos S. PIERSON, a

' citizen of the United States, residing at Kala mazoo, in the county of Kalamazoo and State of Michigan, have invented a new and useful Carbureter, of which the following is a specification.

My invention relates to carb'ureters, or mixing and vaporizingdevices for supplying internal combustion engines with liquid fuel and air, and the objects of my invention are to provide an improved method of controlling the relative proportions of fuel and air and of intimately mixing them.

The accompanying drawings illustrate a. form of carburetor embodying my invention, in which- Figure 1 is a vertical sectional view through A B of Fig. 2; Fig. 2 a top plan view showing a portion broken away; and Fig. 3 a vertical section through C D, of Fig. 1, showin the float and bowl removed and a portion 0 "the cover broken away.

Similar numerals refer to similar parts throughout the several views.

Numeral 1 is an opening for admitting liquid fuel to the reservoir 2, 3 is a valve operated by the float 4 to maintain a desired level of fuel, 5 is a sleeve attached to 4, and guided by the stud or post 8, 6 is a pin connecting 5 with 3, 7 is a transverse slot through the post 8 allowing vertical movement of 3, 4. 5, and 6, 9 is an opening admitting fuel to the chamber or well 10, 11 is a tube hanging in the well 10 and adjustable to various depths in the well, 12 is a hole through 11 connecting 10 with the outer air, 13 is a nut retaining 11 in a desired position, 14 is a passage through which air and fuel are supplied to an engine, 15 isan opening connected air, 17 is a valve controlling the admission of mixed fuel and air to the engine, 18 is a supply at .a higher evel, fuel flows. into' 2- until the valve 3 is closed by the float 4,

when the fuel level will be approximately at,

or slightly above, the lower end of the tube 11, atwhich level it will be maintained.

' Upon the formation of a partial vacuum in '15, and this fins.

with the engine, 16 is an opening to the outer 14 and 10 by the inspiration of an engine, the

liquidfuel, will be drawnupward through 9 and mixed with air descendin through 12. This mixture will (pass u ward. through 10,- in the space outsi e diluted with air, assing through 16, 14, andl rnixture be an plied to the engine.

supplied to the engme maybe controlled by ad usting the space between the lower end of the tube 11 and the bottom of the well 10, said space bein adjust able by movement of the tube 11. r, said tube may be rigidly oft e tube 11, and be- The proportions of uel and -a1r UNITED sim'rns EXTENT 'or nionfl Patented Sept. Y 15, 1sec,

fixed and the proportions of fuel and air supi lied to the engine controlled by the valve 22. he direction of the air current through 14 may be reversed without afiecting the operation of the carbureteri in which case. the

opening 16 is connected with the engine, 15 is open to the air, of fuel and air to the engine, and-17 controls the opening 15; thus providing, in the same carbureter, an available horizontal outlet and an available vertical outlet, the use ofeither of which is optional without transposition, readjustment or change of anypart of the carbureter. l

22 controls the admission I claim as my invention and desire to se i cure by Letters Patent,-- p

1. In a earbureter; the combination of a fuel rea rvoir; me'ans 'for niaintairnng the fuel in said reservoir substantially. at a constant level; a main air passage; a chamber or well opening upward y, into said air pas: sage and (Le fuel opening in the bottom of said well com Inunicating with said reservoir; an air tube hangin in said well, said tube supplying to the bottom of said well inde said main air passage, said t'u I justable to vary the s ace betweenits ower end and the bottom 0 said well for the (put-- ose of regulating the discharge of. mine air and fuel through said space and upwardly throu h said well.

endent y of e bein ed- 2. n a carbureter; the combination with a fuel reservoir in which li uid fuel held at substantially a COHStSJIlD l a fuel opening connecting said reservoir an well; a main air passage communicating with said well; and an adjustable tube admitting air to said well inde main air passage, said tube regulate the discharge from the well into the endently of'said eing adapted to A ending into said reservoir; 2;.

am; f

evel .of a well main sir passage of the mixture formed by I air passing through said tube and fuel passl l l l x i I ing through said fuel openin re latin the o enin between the waIls f 55 :1 tub% and the wal s of said well.

3. In a carbureter; the combination of a 5 fuel reservoir; a coverfor said reservoir; a main air passage through said cover; a stud de endin from said cover; a chamber or we 1 in said stud, said chamberor well being open into said main air passage; a fuel open- 1 ing in said stud dischargingcentrally into the bottom of said well from said reservoir; a float guided on said stud; a tube discharging air at the bottom of said well; said tube being adjustable to 'vary the s ace between its lower end and the bottom 0 said well for the purpose of re ulating the dischar e of mixed air and fuel through said space an into said main air ass'age.

4. Ina car ureter; the combination of a main air pass e; a well depending from said air passage an openin upwardly into it; an air tube hanging in sai well so as to leave an annular space in said well exterior to said tube, said tube supplying air to said well in- 2 dependentl of said main air passage; an opening de ering fuel into said well; and a alve controlling the admission of air into said main air sssage.

5. In a car ureter; the combination of a main air passe e; a well depending from said airpassagean opening upwardly lnto it; an

air tube hanging in said well so as to leave an annular space in said Well exterior to said tube, said tube supplying air to said well inopening delivering fuel into said well; and a valve controlling the discharge from said -rnain air passage. r 6. In a carbureter; the combination of a air passage an openin upwardly into it; an air tube hanging in sai well so as'to leave an annular space 1n said well exterior to said tube, said tube supplying air to said well independently of said main air passage; an opening delivering fuel into said well; a valve controlling the admission of air into said main air passage; and a valve controlling the discharge from said main air pass 6.

7. In a carbureter; the combination 0 a main air passa e a well depending from said air passage and opening upwardly into it; an

dependently of said main air passage; and an opening delivering fuel into said well. In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

GEORGE S. PIERSON. Witnesses:

l HENRY A. Ronnvson,

'\ JAMES J. ROBINSON.

dependently of said main air passage; an 35 vmain air pass-a e; a well depending from said 40 air tube discharging air into said well in- 

